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神钢-8型挖掘机维修-冷却水不足报警

神钢-8型挖掘机维修-冷却水不足报警

           维修技术案例分析
                                                                                       编号:CKCMG-JAL-07-080
编号                                类别                  关联内容  
                                       电路              空调面板无显示          
机型       微挖       B92  B93  B94  B128       B130       B132       其它
                                                                                          √   
故障现象: 整机号:YC10-C5037                                     
                            工作时间:2900 小时                                    
                            工作状况:    矿山采石                                  
                           故障现象:该机每天都会出现冷却水不足报警,                                     
                                                       
                                                       
                                                       
                                                       
                                                       
原因分析:             
                     1.出现冷却水报警后检查副水箱发现副水箱冷却水特别多,而主水箱里确实缺水了, 
                     先怀疑是水箱盖或主副水箱之间的连接管道有问题,全部更换后故障依然存在.                                       
                                                       
             
                    2.打开水箱盖后将发动机处于高油门发现水箱里有大量气泡冒出,所以初步判断为 
             缸垫被冲破.                                        
                                                       
                    3.做断缸实验发现断5缸后观察水箱气泡明显减少,判断为5缸处缸垫被冲破                                         
                                                       
                    4.拆开缸盖后发现缸垫在5缸附近的螺丝孔损坏                                       
                                                       
                                                       
                                                       
处置方法:                                                       
                                                       
              更换缸垫      
 
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